Yeah the idea is the more you ski/mold your ZipFits the better. Every time you ski and/or get them warm the cork material softens up a bit and gets squished to areas where you have extra space/less...

I have wide feet like you, but a high instep, thick but not overly large calves, and a narrow heel.

I second zipfits. Specifically the grand-prix sidewinders. The forefoot-toe area is...